#333FA9#333FA9
#333FA9 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.168 H 272.1°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).
Color values
| HEX | #333FA9 |
|---|---|
| RGB | rgb(51, 63, 169) |
| HSL | hsl(234, 54%, 43%) |
| HSV | hsv(234, 70%, 66%) |
| CMYK | cmyk(69.8%, 62.7%, 0%, 33.7%) |
| CIE-LAB | lab(32.08, 31.14, -58.35) |
| CIE-LCH | lch(32.08, 66.14, 298.08°) |
| OKLab | oklab(42.69% 0.0062 -0.1684) |
| OKLCH | oklch(42.69% 0.168 272.1) |
| XYZ | xyz(10.3018, 7.1224, 38.3603) |
| Luminance | 0.0712 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.37
Blue Blue
#2242C7
ΔE00 4.10
Blueberry
#464196
ΔE00 4.22
Ocean Blue
#4F42B5
ΔE00 4.46
Cobalt
#0047AB
ΔE00 5.36
Darkslateblue
#483D8B
ΔE00 6.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#333FA9 #A99D33
analogous
#337AA9 #333FA9 #6233A9
triadic
#333FA9 #A9333F #3FA933
tetradic
#333FA9 #A9337A #A99D33 #33A962
square
#333FA9 #A9337A #A99D33 #33A962
split-complementary
#333FA9 #A96233 #7AA933
monochromatic
#171C4B #252D7A #333FA9 #4F5CCA #7E87D8
Accessibility & contrast
On white
8.66
#333FA9 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#333FA9 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #333FA9
8.66:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##333FA9 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##333FA9 | 1.00 | 8.66 | 2.42 | 8.66 |
| #FFFFFF | 8.66 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.42 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.66 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051AC
Deuteranopia (green-blind)
#0046A7
Tritanopia (blue-blind)
#005A6E
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #333fa9; /* rgb */ color: rgb(51, 63, 169); /* oklch */ color: oklch(42.7% 0.168 272.1);
Tailwind
colors: {
custom: {
50: '#7a74c3',
500: '#333fa9',
950: '#000000',
},
}SCSS
$custom: #333fa9; $custom-light: #7a74c3; $custom-dark: #000000;
JSON
{
"hex": "#333fa9",
"rgb": {
"r": 51,
"g": 63,
"b": 169
},
"hsl": {
"h": 233.898,
"s": 53.636,
"l": 43.137
},
"oklch": {
"l": 0.42692,
"c": 0.16849,
"h": 272.1
},
"luminance": 0.07123
}Semantic roles & 50–950 ramp
primary
#333FA9
secondary
#C1BA77
accent
#CE4BDD
background
#F8F7FC
surface
#EFEDF8
border
#CAC8D1
text
#0A0813
muted
#7C7B82